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 176/187 = 176 :11 / 187 :11 = 16/17.

1313/1515 = 1313 : 101/1515 : 101 = 13/15.

\(\frac{176}{187}\)\(=\)\(\frac{176:11}{187:11}\)\(=\)\(\frac{16}{17}\)

\(\frac{1313}{1515}\)\(=\)\(\frac{1313:101}{1515:101}\)\(=\)\(\frac{13}{15}\)

\(\dfrac{1313}{1515}=\dfrac{1313:101}{1515:101}=\dfrac{13}{15}\)

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\(\dfrac{176}{187}=\dfrac{176:11}{187:11}=\dfrac{16}{17}\)

\(\dfrac{1313}{1515}=\dfrac{1313:101}{1515:101}=\dfrac{13}{15}\)

\(\dfrac{176}{187}=\dfrac{176:11}{187:11}=\dfrac{16}{17}\)

1313:1011515:1011313:1011515:101 = $\frac{13}{15}$

1313151513131515 = $\frac{13}{15}$

176/187=176:11/187:11=16/17 

6.170.617/12.341.234  

45/27=5/3

25/50=1/2

12/21=4/7

24/56=3/7

22/121=2/11

196/28=7

26/169=2/13

221/187=13/11

     \(\frac{77}{176}=\frac{77:11}{176:11}=\frac{7}{16}\)                              ;                               \(\frac{232323}{474747}=\frac{232323:10101}{474747:10101}=\frac{23}{47}\)

       \(\frac{376376}{159159}=\frac{376376:1001}{159159:1001}=\frac{376}{159}\)                ;                    \(\frac{9\cdot8\cdot5}{24\cdot15}=\frac{9\cdot8\cdot5}{8\cdot3\cdot3\cdot5}=\frac{9\cdot8\cdot5}{8\cdot9\cdot5}=1\)

\(\frac{9.8.5}{24.15}\)

\(=\frac{9.8.5}{8.3.3.5}\)

\(=1\)

bạn ơi câu a mk ko pik vì nó có số 5 ở cuối

b) 121212 / 424242 : 10101 / 10101 = 2/7

c) 187187187 / 221221221 : 1001001/1001001 = 11/13

d) mk ko pik nhé bạn thông cảm

ai thấy đúg thì tk nha

thank you !!!

Cảm ơn bạn nhiều 

Rút gọn phân số

\(\frac{26}{91}=\frac{26:13}{91:13}=\frac{2}{7}\)

\(\frac{1515}{1919}=\frac{1515:101}{1919:101}=\frac{15}{19}\)

Quy đồng mẫu số các phân số

*\(\frac{5}{6}=\frac{5.4}{6.4}=\frac{20}{24}\)và  \(\frac{7}{8}=\frac{7.3}{8.3}=\frac{21}{24}\)

*\(\frac{5}{12}=\frac{5.2}{12.2}=\frac{10}{24}\);  \(\frac{2}{3}=\frac{2.8}{3.8}=\frac{16}{24}\) và \(\frac{7}{24}\)

So sánh phân số

*Ta có : \(\frac{3}{2}=\frac{3.94}{2.94}=\frac{282}{188}\)

=> \(\frac{187}{188}< \frac{282}{188}\) hoặc \(\frac{187}{188}< \frac{3}{2}\)

*\(\frac{3}{15}=\frac{1}{5}\)

Ta có : \(\frac{2}{9}=\frac{2.5}{9.5}=\frac{10}{45}\) và \(\frac{1}{5}=\frac{1.9}{5.9}=\frac{9}{45}\)

=> \(\frac{10}{45}>\frac{9}{45}\) hoặc \(\frac{2}{9}>\frac{1}{5}\)

~gOOd sTUDy~ :))